/*

 * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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package sun.reflect.generics.reflectiveObjects;

import java.lang.reflect.Type;

import sun.reflect.generics.factory.GenericsFactory;

import sun.reflect.generics.tree.FieldTypeSignature;

import sun.reflect.generics.visitor.Reifier;

/**

 * Common infrastructure for things that lazily generate reflective generics

 * objects.

 * <p> In all these cases, one needs produce a visitor that will, on demand,

 * traverse the stored AST(s) and reify them into reflective objects.

 * The visitor needs to be initialized with a factory, which will be

 * provided when the instance is initialized.

 * The factory should be cached.

 *

*/

public abstract class LazyReflectiveObjectGenerator {

    private final GenericsFactory factory; // cached factory

    protected LazyReflectiveObjectGenerator(GenericsFactory f) {

        factory = f;

    }

    // accessor for factory

    private GenericsFactory getFactory() {

        return factory;

    }

    // produce a reifying visitor (could this be typed as a TypeTreeVisitor?

    protected Reifier getReifier(){return Reifier.make(getFactory());}

    Type[] reifyBounds(FieldTypeSignature[] boundASTs) {

        final int length = boundASTs.length;

        final Type[] bounds = new Type[length];

        // iterate over bound trees, reifying each in turn

        for (int i = 0; i < length; i++) {

            Reifier r = getReifier();

            boundASTs[i].accept(r);

            bounds[i] = r.getResult();

        }

        return bounds;

    }

}